Spokesperson Val Lopez said the crews were doing the ice prevention work in between the morning and afternoon rush hour times on Thursday. He said operations could continue into the weekend, if needed.

Some have been confused about why @TxDOT is pretreating area roads in 73° weather. They tell me this is in preparation for possible winter weather late next week. The pre-treatment can last up to 10 days. Trying to get ahead of holiday traffic and use fully-staffed crews. pic.twitter.com/OZAurocW7U